Collective excitation of a trapped Bose-Einstein condensate with spin-orbit coupling

Autor:	Chen, Li, Pu, Han, Yu, Zeng-Qiang, Zhang, Yunbo
Rok vydání:	2017
Předmět:	Condensed Matter - Quantum Gases Quantum Physics
Zdroj:	Phys. Rev. A 95, 033616 (2017)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.95.033616
Popis:	We investigate the collective excitations of a Raman-induced spin-orbit coupled Bose-Einstein condensate confined in a quasi one-dimension harmonic trap using the Bogoliubov method. By tuning the Raman coupling strength, three phases of the system can be identified. By calculating the transition strength, we are able to classify various excitation modes that are experimentally relevant. We show that the three quantum phases possess distinct features in their collective excitation properties. In particular, the spin dipole and the spin breathing modes can be used to clearly map out the phase boundaries. We confirm these predictions by direct numerical simulations of the quench dynamics that excites the relevant collective modes. Comment: 7 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1704.01242 Zobrazit plný text záznamu View this record from Arxiv